Mechanical-Chemical Activation of Cement-Sand Stone for Reuse in Construction

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In modern construction concrete recycling is one of the promising directions of utilization of multi-tonnage concrete and reinforced concrete waste. Most often concrete crushing products are reused as coarse and fine aggregate. It is shown in the paper that reuse of the dusty fraction of cement-sand stone as an active colloidal additive obtained by its alkaline mechanical-chemical activation allows to partially replace cement in commercial concrete and hydraulically hardening compositions without loss of their strength. This paper presents the results of the effect of colloidal admixture on technological and physical-mechanical properties of concrete mixture.

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作者简介

P. Simonov

Novosibirsk State University

编辑信件的主要联系方式.
Email: spa_nsk@mail.ru

Candidate of Sciences

俄罗斯联邦, Novosibirsk

G. Storozhenko

Novosibirsk State University of Architecture and Civil Engineering (SIBSTRIN)

Email: baskey_ltd@mail.ru

Doctor of Sciences

俄罗斯联邦, Novosibirsk

M. Rakov

Novosibirsk State University of Architecture and Civil Engineering (SIBSTRIN)

Email: westcoast89@mail.ru

Candidate of Sciences

俄罗斯联邦, Novosibirsk

H. Manzyrykchy

Tuvinian Institute for Exploration of Natural Resources of Siberian Branch of RAS

Email: herelka_geotom@mail.ru

Junior Researcher

刚果, Republic of Tyva, Kyzyl

参考

  1. Chulkov V.О., Nazirov B.E. Recycling of construction and demolition waste during renovation of territories and road surfaces of large cities. Otchody i resursi. 2018. No. 4. (In Russian). DOI: http://dx.doi.org/10.15862/06NZOR418
  2. Efimenko A.Z. Concrete waste is a raw material for the production of efficient building materials.Technologii betonov. 2014. No. 2, pp. 19–23. (In Russian).
  3. Beppaev Z.U., Astvatsaturova L.H., Kolodyazhny S.A., Vernigora S.A., Lopatinsky V.V. Prospects for the use of fine-dispersed recycling products of concrete processing as mineral additives for the manufacture of building mortars. Beton i Zhelezobeton. 2023. No. 1 (615), pp. 43–55. (In Russian). DOI: https://doi.org/10.37538/0005-9889-2023-1(615)-43-55
  4. Goncharova M.A., Borkov P.V., Al-Surrayvi H.G.H. Recycling of large-capacity concrete and reinforced concrete waste in the context of realization of full life cycle contracts. Stroitel’nye Materialy [Construction Materials]. 2019. No. 12, pp. 51–57. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2019-777-12-52-57
  5. Remnev V.V. Possibility of using reusable building materials in concretes. Beton i Zhelezobeton. 2022. No. 3 (611), pp. 20–22. (In Russian). DOI: https://doi.org/10.31659/0005-9889-2022-611-3-20-22
  6. Krasinikova N.M., Kirillova E.V., Khozin V.G. Reuse of concrete waste as input products for cement concretes. Stroitel’nye Materialy [Construction Materials]. 2020. No. 1–2, pp. 56–65. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2020-778-1-2-56-65
  7. Pacheco-Torgal F., Labrincha J.A., Leonelli C., Palomo A., Chindaprasirt P. Handbook of Alkali-activated Cements, Mortars and Concretes. Elsevier. 2015. 830 p. DOI: https://doi.org/10.1016/C2013-0-16511-7
  8. European Standard EN 197-1. Cement – Part 1: Composition, specifications and conformity criteria for common cements. ICS 91.100.10. European Committee for standardization. 2000.
  9. Patent SU 1100265. Sposob prigotovlenia betonnoy smesi [Method of preparation of concrete mix]. Olgin- skiy A.G. Declared 22.10.1982. Published 30.06.1984. (In Russian).
  10. Patent RF 2223241. Sposob poluchenya cementnogo betona [Method for producing cement concrete]. Khvostenkov S.I. Declared 19.11.2002. Published 10.02.2004. (In Russian).
  11. Vernigorova V.N. Chimia v stroitelstve [Chemistry in construction]. Penza. PSUAC. 2012. Part 3. 131 p.

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2. Fig. 0

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3. Fig. 0.1

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4. Fig. 0.1.2

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5. Fig. 1. Scheme of possible surface reactions of hydrated C3AH6 (top) and C-S-H (bottom) with a chemical activator – NaOH

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6. Fig. 2. Scheme of chemical binding of the surface of particles of activated cement stone (shown as gray spheres) with the surface of the gel formed when mixing cement with water (shown as a wavy line)

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7. Fig. 3. Microphotographs of thin sections of the control sample: a, c – parallel nicoles; b, d – crossed nicoli. Symbols: ц.к – cement stone, Qtz – quartz, Db – diabase

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8. Fig. 4. Microphotographs of thin sections, sample С13: a, c – parallel nicoles; b, d – crossed nicoli. Symbols: ц.к – cement stone, Qtz – quartz, Db – diabase, Px – pyroxene

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